Volume 63, Issue 1 pp. 9-19
Critical Review

Fate and Behavior of Gunshot Residue—A Review

Lauren S. Blakey B.Sc.

Lauren S. Blakey B.Sc.

School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Byrom Street, L3 3AF Liverpool, UK

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George P. Sharples Ph.D.

George P. Sharples Ph.D.

School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Byrom Street, L3 3AF Liverpool, UK

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Kal Chana G.R.S.C.

Kal Chana G.R.S.C.

Orchid Cellmark, PO Box 265, Abingdon, OX14 1YX Oxfordshire, UK

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Jason W. Birkett Ph.D.

Corresponding Author

Jason W. Birkett Ph.D.

School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Byrom Street, L3 3AF Liverpool, UK

Additional information and reprint requests:

Jason W. Birkett, Ph.D.

School of Pharmacy and Biomolecular Sciences

Liverpool John Moores University

James Parsons Building

Byrom Street

Liverpool

L3 3AF

UK

E-mail: [email protected]

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First published: 23 May 2017
Citations: 82

Abstract

A review of the literature concerning the fate and behavior of gunshot residue (GSR) is presented. A number of concomitant parameters including firearm and ammunition type, plume and GSR material characteristics, travel distances, chemical composition and GSR morphology are critically discussed in relation to their effects on the distribution and deposition, transfer and persistence processes of GSR. The underlying mechanisms associated with such processes are also considered. Knowledge of these processes on GSR materials could provide valuable information concerning scene preservation and subsequent forensic sampling. The number of GSR particles deposited can vary significantly with each firearm discharge, highlighting the potential to produce distinctive data in each individual case. With the continual development and compositional changes of new ammunition types, further evaluation of the effect these processes may have on GSR evidence and their possible influence on the interpretation of the analytical results should be given due consideration.

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